Acoustic emission caused by mechanical stress relaxation at oscillations of piezo-dielectric plates
Time correlation of 3rd and 2nd oscillation harmonics for piezo-dielectric plates with LiNbO₃ as well as the acoustic emission (AE) parameters as functions of the strain amplitude have been studied. The threshold increase and a hysteresis have been revealed in dependences of the harmonic intensity t...
Збережено в:
| Дата: | 2005 |
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| Автори: | , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
НТК «Інститут монокристалів» НАН України
2005
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| Назва видання: | Functional Materials |
| Онлайн доступ: | http://dspace.nbuv.gov.ua/handle/123456789/139713 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Acoustic emission caused by mechanical stress relaxation at oscillations of piezo-dielectric plates / M.V. Kravtsov, O.V. Lyashenko // Functional Materials. — 2005. — Т. 12, № 1. — С. 133-135. — Бібліогр.: 2 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | Time correlation of 3rd and 2nd oscillation harmonics for piezo-dielectric plates with LiNbO₃ as well as the acoustic emission (AE) parameters as functions of the strain amplitude have been studied. The threshold increase and a hysteresis have been revealed in dependences of the harmonic intensity that correlate with the threshold increase in the AE intensity. This correlation is related to the relaxation (quenching) of mechanical stresses near to the AE source in the course of the dislocation line tearing-off and fixation, that results in changes in the local elasticity moduli. |
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